Home / 125,131,639.50-187,805,518.92-86,820,057.78

Finding the Fourth Proportional to 125,131,639.50, 187,805,518.92 and 86,820,057.78

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Solution

The fourth proportional to 125,131,639.50, 187,805,518.92 and 86,820,057.78 is: 130,305,061.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,131,639.50 : 187,805,518.92 = 86,820,057.78 : x
  2. Step 2: Convert to fraction form
    125,131,639.50/187,805,518.92 = 86,820,057.78/x
  3. Step 3: Cross multiply
    125,131,639.50x = 187,805,518.92 × 86,820,057.78
  4. Step 4: Simplify right side
    125,131,639.50x = 16,305,286,004,037,282
  5. Step 5: Solve for x
    x = 16,305,286,004,037,282/125,131,639.50
  6. Step 6: Final answer
    x = 130,305,061.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.